Abstract:This paper introduces the installation and construction of 200 tons gantry crane in Qingdao Beihai Shipyard as an example, summarizes the application of hydraulic lifting technology in the installation of heavy equipment, and further improves the construction technology of hydraulic lifting.

Abstract:Changzhang Expressway 20 standard three work area, there are 4 special, bridge, need prefabricated 30m prestressed concrete T beam 420 pieces. Due to the steep terrain of the project, apart from the bridge project, the left and right lines of the high excavation are separated subgrade. Therefore, it is very important to arrange the precast site reasonably and adopt the feasible beam site construction scheme to shorten the construction period and reduce the project cost. Therefore, the author comprehensively introduces the layout scheme, construction organization, labor force and material arrangement of the prefab yard, as well as the construction technology and precautions of the beam yard, and the results obtained can be used as reference for similar projects.

Abstract:Based on six fully coated epoxy-sprayed steel strand tie rods used in Changjiang Branch Line I Bridge in Jingdezhen City, the types of anti-corrosion steel strand, the principle and characteristics of epoxy-sprayed steel strand, the composition of fully coated epoxy-sprayed tie rods, the performance characteristics of each component material, and the key points of construction technology and tensioning methods of the tie rods are introduced.

Abstract:Based on the test examples of anchorage performance of anchors under static load, the relationship between anchor quality, steel strand hardness and anchor hardness, and the relationship between total quality management and anchorage performance are discussed.

Abstract:concrete pouring, first pour one side, then pour the other side, in order to avoid the impact of the deformation of the rigid skeleton on the poured concrete caused by concrete cracking, the use of water tank pressure control. The specific practice is to install a water tank with a capacity of 46 cubic meters and a capsule with a capacity of 40 cubic meters under the bottom plate in advance, and place a pressure weight of 10 tons at the upper node of the front end of the rigid skeleton, a total of 96 tons. Pour water as you pour concrete until the concrete is finished.

Abstract:This paper introduces the application, construction methods, construction steps and key technical points of cable in cutting high slope through the application of cable in cutting high slope in a certain section of Yuejiang-Jiangxi Expressway, and accumulates experience for cable in construction.

Abstract:This paper describes the structure, advantages and disadvantages and applicable conditions of prestressed anchor cables commonly used in geotechnical engineering reinforcement at present, especially emphasizing the standard structure of various anchor cables used as permanent support means. The purpose of this paper is to make the users of anchor cables have a correct understanding of various anchor cables and correct non-standard construction methods. When designing the anchor cable, the type of anchor cable should be selected correctly according to the property of rock mass, engineering requirements and the function of anchor cable.

Abstract:Nagisa Bridge is the first hybrid PC cable-stayed bridge in the world with the combination of prestressed concrete cable-stayed bridge and reinforced box girder suspension bridge.

Abstract:The width of the bridge is 17.2m-21.8m, and the span is 51m+119m. It is a single tower asymmetric oblique bridge. The arched bridge tower is very distinctive, the arch tower is 60 meters high.